18-letter words containing h, o, b, y
- rosebay willowherb — a perennial onagraceous plant, Chamerion (formerly Epilobium) angustifolium, that has spikes of deep pink flowers and is widespread in open places throughout N temperate regions
- september holidays — a period of time in September when people do not have to go to school, college or work
- shrubby cinquefoil — a small shrub, Potentilla fruticosa, of the rose family, native to the Northern temperate region, having pinnate leaves and numerous, showy, bright-yellow flowers.
- southeast by south — a point on the compass 11°15′ south of southeast. Abbreviation: SEbS.
- southwest by south — a point on the compass 11°15′ south of southwest. Abbreviation: SWbS.
- the back of beyond — a very remote place
- three-body problem — the problem of calculating the motions of three bodies in space moving under the influence of only their mutual gravitational attraction.
- to gussy sb/sth up — to give (a person or thing) a smarter or more interesting appearance
- too clever by half — If someone is too clever by half, they are very clever and they show their cleverness in a way that annoys other people.
- two-chamber system — the system of having two parliamentary chambers, as the House of Lords and the House of Commons in the United Kingdom
- up to the eyeballs — You use up to the eyeballs to emphasize that someone is in an undesirable state to a very great degree.